Overview

• In a Friday Truth Social post, President Trump told pregnant women to avoid Tylenol unless absolutely necessary, urged parents not to give it to young children, and called for splitting MMR into three shots, delaying hepatitis B to age 12, and spacing vaccines over five visits.
• The FDA’s letter to clinicians said studies describe an association between prenatal acetaminophen use and autism but do not establish causation, and it reiterated that acetaminophen remains the safest over‑the‑counter option for treating fevers in pregnancy.
• CMS head Dr. Mehmet Oz said pregnant patients should take acetaminophen if a doctor advises it for conditions like high fever, and Vice President JD Vance told women to follow their physicians’ guidance.
• Doctors report immediate effects in clinics, including anxious patients second‑guessing past choices, requests to space out childhood vaccines, and refusals of acetaminophen for newborn care where it is commonly used.
• Major medical groups and regulators in the U.S. and abroad, including ACOG, WHO and other national health authorities, rejected a definitive causal link and warned against discouraging appropriate treatment; Tylenol maker Kenvue also disputed that the drug causes autism.